Celebrations continue at IWC Schaffhausen to mark their historic 150th anniversary. After back to back unveilings today we zoom in on this impressive limited edition “IWC Portugieser Perpetual Calendar Edition ‘150 Years’”.

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Image courtesy of: IWC

This year has seen many new releases by IWC, up to a total of 27 to date, but there may be more on the way. Here on our EiT blog we’ve covered quite a few of the more noteworthy timepieces, such as the: “IWC Tribute To Pallweber Edition 150 Years” (Ref#: IW505002) based on the original Pallweber pocket watch conceived in the 19th century, you can learn more about here; the “IWC Da Vinci Automatic 150 Years” (Ref#: IW358102) equipped with the new IWC in-house mechanical movement caliber 82200, you can gain more detail on here; or the complication packed duo of “IWC Portugieser Constant-Force” (IW590202) & “IWC Perpetual Calendar Tourbillion 150 Years” (Ref#: IW504501) editions, which we distinguished and covered in great-depth here.


IWC Portugieser Constant-Force & Perpetual Calendar Tourbillon (150 Years)

The 44mm case is made of 18k rose gold with a transparent case back, which allows to view the inner workings of the mechanical movement. There is a limited edition engraving that reads “150 YEARS” on the 18k rose gold rotor, seen thru the exhibition case back.

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Image courtesy of: IWC

This large case diameter provides a very spacious accommodation for all these horology complications. All topped by a sapphire crystal that assists with water-resistance on this watch reaching up to 30 meters (98 feet).

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Image courtesy of: IWC

Time is exhibited on a white lacquered dial with blue Arabic numerals, followed by a blue railroad motif minute index markers ring, circling around the dial nearing the bezel. The perpetual calendar is expressed via three sub-dials: a date dial with a power reserve in its midst at the 3 o’clock position; followed by a month dial at the 6 o’clock position; and finally a weekday dial with a sub-seconds in its midst at the 9 o’clock position.

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A slightly bigger sub-dial features a Moonphase with displays for both the north and south hemispheres at the 12 o’clock position, with a small “N” and “S” indication for each. Equipped with blue central hands, as well as blued sub-dial hands. There is also a year aperture positioned between the 7 and 8 o’clock positions. The perpetual calendar is quite accurate and won’t require a correction until the year 2100, if it were to keep running continuously.

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Image courtesy of: IWC

IWC Portugieser Perpetual Calendar Edition ‘150 Years’

This “IWC Portugieser Perpetual Calendar Edition ‘150 Years’” (Ref#: IW503405) is powered by a self-winding mechanical movement, caliber 52615 with 54 jewels and 28,800 Vph. Equipped with a Pellaton pawl-winding system and two barrels made out of black ceramic; as well as a white ceramic rotor. Power reserve on this watch can last up to 168 hours, when fully wound.

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Image courtesy of: IWC

Mounted to the watch is a Santoni black alligator leather strap, secured to the wrist by an 18k rose gold deployment clasp. This is a limited edition watch of only 250 manufactured pieces. For more up to date information visit the official IWC website here.

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Image courtesy of: IWC

MSRP: $39,900.00 USD

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Written by Mauro Az